RE: Over Saturation?

["Tesla list" <tesla-at-pupman-dot-com>]

Original poster: "Randy & Lori" <rburney6-at-comcast-dot-net> 

Sorry Phil; My question isn't possible.  I was looking for a short
"throw out there" example (it was late).  Let me try again.  I have an
Ammeter monitoring my line current; I have L1 and L2 connected to the
two ends of the coil on my variac (forget the tap for the moment).  My
Ammeter reads 0 Amps.  If this were an air core coil I would have blown
a fuse, but not with the variac.  I understand that it is the inductive
reactance of the variac that is preventing current flow.  I am guessing
at this point I am "Saturated".  Going by the formula for "Inductive
Reactance" the only way change this state would be to change the
frequency.  Since I can't change the frequency of my line voltage, how
would I become "Over Saturated"?  I read on this list (somewhere) that
if I wanted to use my variac as a variable inductor, I should cut the
core of the variac to prevent "Over Saturation".  Judging by the way I
have seen the term used, I am guessing that "Over Saturation" means that
I would have "run away" current.  If this is truly what is happening,
then my question is this:  What is happening in my core that would cause
current to go through the roof, and throw my formula for "Inductive
Reactance" out the door?  If this is not what happens, then what is
"Over Saturation"?  I hope this explains my confusion.

-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, January 28, 2004 12:44 AM
To: tesla-at-pupman-dot-com
Subject: RE: Over Saturation?

Original poster: "Philip Chalk" <phil-at-apsecurity-dot-com.au>



-----Original Message-----
From: Tesla list [mailto:tesla-at-pupman-dot-com]
Sent: Wednesday, 28 January 2004 1:53 AM
To: tesla-at-pupman-dot-com
Subject: Over Saturation?

Original poster: "Randy & Lori" <rburney6-at-comcast-dot-net>

Why does my Variac (powered up) give me 0 volts difference of
potential when an ohm meter tells me 0 ohms?  me.

Randy
Savannah, GA


Huh ??

Well, for a start,  V = I.R   If R=0, then V=0

But I know that's not you mean - I don't get what you're trying to ask ?

Phil C.